diff options
Diffstat (limited to 'btrfstune.c')
| -rw-r--r-- | btrfstune.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/btrfstune.c b/btrfstune.c index 31836313..dd5626ef 100644 --- a/btrfstune.c +++ b/btrfstune.c @@ -392,6 +392,7 @@ static void print_usage(void) fprintf(stderr, "\t-S value\tpositive value will enable seeding, zero to disable, negative is not allowed\n"); fprintf(stderr, "\t-r \t\tenable extended inode refs\n"); fprintf(stderr, "\t-x \t\tenable skinny metadata extent refs\n"); + fprintf(stderr, "\t-n \t\tenable no-holes feature (more efficient sparse file representation)\n"); fprintf(stderr, "\t-f \t\tforce to do dangerous operation, make sure that you are aware of the dangers\n"); fprintf(stderr, "\t-u \t\tchange fsid, use a random one\n"); fprintf(stderr, "\t-U UUID\t\tchange fsid to UUID\n"); @@ -412,7 +413,7 @@ int main(int argc, char *argv[]) optind = 1; while(1) { - int c = getopt(argc, argv, "S:rxfuU:"); + int c = getopt(argc, argv, "S:rxfuU:n"); if (c < 0) break; switch(c) { @@ -426,6 +427,9 @@ int main(int argc, char *argv[]) case 'x': super_flags |= BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA; break; + case 'n': + super_flags |= BTRFS_FEATURE_INCOMPAT_NO_HOLES; + break; case 'f': force = 1; break; |